/*
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.firebase.database.utilities;

public class OffsetClock implements Clock {

  private final Clock baseClock;
  private long offset = 0;

  public OffsetClock(Clock baseClock, long offset) {
    this.baseClock = baseClock;
    this.offset = offset;
  }

  public void setOffset(long offset) {
    this.offset = offset;
  }

  @Override
  public long millis() {
    return baseClock.millis() + offset;
  }
}
